package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传入的密码进行md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     *  保存员工信息
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        // 对象属性拷贝，将前端输入的数据全赋值到这个employee对象
        // 注意：需要拷贝的属性名要与前端输入的属性名一致
        BeanUtils.copyProperties(employeeDTO, employee);

        //还要为这个employee对象的其他属性赋值

        //设置登录状态为1，表示正常登录
        employee.setStatus(StatusConstant.ENABLE);

        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置创建时间和更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //设置创建人的id和更新人的id
////        employee.setCreateUser(10L);
////        employee.setUpdateUser(10L);
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /**
     * 查询员工信息，分页
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

//        //开始查询
        Page<Employee> page = employeeMapper.page(employeePageQueryDTO);
//
//        //封装返回结果
//        return new PageResult(page.getTotal(), page.getResult());
        long total = page.getTotal();
        List<Employee> records = page.getResult();

        return new PageResult(total, records);
    }



    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    public Employee selectById(Long id) {
        Employee employee = employeeMapper.selectById(id);
        // 掩盖敏感信息：密码
        employee.setPassword("******");
        return employee;
    }

    /**
     * 更新员工信息
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());

        employeeMapper.update(employee);
    }

    /**
     * 启用或禁用员工
     * @param status
     * @param id
     */
    public void StartOrStop(Integer status, Long id) {
//        Employee employee = new Employee();
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }
}
